import logging
import os
import time
from datetime import timedelta, datetime
from uuid import uuid4

from flask import session, render_template, request, current_app, redirect, jsonify, g, make_response, abort

from info import constants, db
from info.models import User, News, Category
from info.utils.common import admin_login_data
from info.utils.response_code import RET
from . import admin_blu

# Todo 管理员主页
@admin_blu.route('/index')
@admin_login_data
def index():
    if not g.admin:
        return redirect("/admin/login")
    data = {
        "admin":g.admin
    }
    return make_response(render_template('admin/index.html',data=data),200)

# Todo 管理员登录页面和登录操作
@admin_blu.route('/login', methods=["GET", "POST"])
def login():
    if request.method == "GET":
        return make_response(render_template('admin/login.html'),200)

    # 获取登录参数
    username = request.json.get("username")
    password = request.json.get("password")
    if not all([username, password]):
        return jsonify(errno=constants.WRONG_INPUT_TAG, errmsg="参数不足")
    user = User.query.filter(User.mobile==username).first()
    if not user:
        return jsonify(errno=constants.WRONG_INPUT_TAG,errmsg="用户名不存在")
    if not user.check_password(password):
        return jsonify(errno=constants.WRONG_INPUT_TAG, errmsg="密码错误")
    if not user.is_admin:
        return jsonify(errno=constants.WRONG_INPUT_TAG, errmsg="权限不足")

    session["admin_id"] = user.id

    # 跳转到后台管理主页
    return jsonify(errno=constants.CORRECT_TAG,errmsg="管理员登录成功")

@admin_blu.route("/logout",methods=["POST"])
def logout():
    try:
        session.pop("admin_id")
        return jsonify(errno=constants.CORRECT_TAG)
    except Exception as e:
        return jsonify(errno=constants.SYSTEM_WRONE_TAG,errmsg="系统出错,注销失败")

@admin_blu.route('/user_count')
@admin_login_data
def user_count():
        # 总人数
    total_count = 0
    try:
        total_count = User.query.filter(User.is_admin == False).count()
    except Exception as e:
        current_app.logger.error(e)

    # 月新增数
    mon_count = 0
    t = time.localtime()
    begin_mon_date_str = '%d-%02d-01' % (t.tm_year, t.tm_mon)
    # 将字符串转成datetime对象
    begin_mon_date = datetime.strptime(begin_mon_date_str, "%Y-%m-%d")
    try:
        mon_count = User.query.filter(User.is_admin == False, User.create_time > begin_mon_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 日新增数
    day_count = 0
    begin_day_date = datetime.strptime(('%d-%02d-%02d' % (t.tm_year, t.tm_mon, t.tm_mday)), "%Y-%m-%d")
    try:
        day_count = User.query.filter(User.is_admin == False, User.create_time > begin_day_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 拆线图数据

    active_time = []
    active_count = []

    # 取到今天的时间字符串
    today_date_str = ('%d-%02d-%02d' % (t.tm_year, t.tm_mon, t.tm_mday))
    # 转成时间对象
    today_date = datetime.strptime(today_date_str, "%Y-%m-%d")

    for i in range(0, 31):
        # 取到某一天的0点0分
        begin_date = today_date - timedelta(days=i)
        # 取到下一天的0点0分
        end_date = today_date - timedelta(days=(i - 1))
        count = User.query.filter(User.is_admin == False, User.last_login >= begin_date,
                                  User.last_login < end_date).count()
        active_count.append(count)
        active_time.append(begin_date.strftime('%Y-%m-%d'))

    # User.query.filter(User.is_admin == False, User.last_login >= 今天0点0分, User.last_login < 今天24点).count()

    # 反转，让最近的一天显示在最后
    active_time.reverse()
    active_count.reverse()

    data = {
        "total_count": total_count,
        "mon_count": mon_count,
        "day_count": day_count,
        "active_time": active_time,
        "active_count": active_count
    }

    return make_response(render_template('admin/user_count.html', data=data),200)

@admin_blu.route('/user_list')
@admin_login_data
def user_list():
    page = request.args.get("p", 1)

    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    users = []
    current_page = 1
    total_page = 1

    try:
        paginate = User.query.filter(User.is_admin == False).order_by(User.last_login.desc()).paginate(page,
                                                                                                       constants.ADMIN_USER_PAGE_MAX_COUNT,
                                                                                                       False)
        users = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    # 进行模型列表转字典列表
    user_dict_list = []
    for user in users:
        user_dict_list.append(user.to_admin_dict())

    data = {
        "users": user_dict_list,
        "total_page": total_page,
        "current_page": current_page,
    }

    return make_response(render_template('admin/user_list.html', data=data),200)

@admin_blu.route('/news_review')
def news_review():
    page = request.args.get("p", 1)
    # 获取搜索框关键字
    keywords = request.args.get("keywords", None)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1

    filters = [News.status != 0]
    # 如果关键字存在，那么就添加关键字搜索
    if keywords:
        filters.append(News.title.contains(keywords))
    try:
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)

        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)
    
    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_review_dict())
    print(news_list)
    context = {
        "total_page": total_page,
        "current_page": current_page,
        "news_list": news_dict_list
    }


    return make_response(render_template('admin/news_review.html', data=context),200)


@admin_blu.route('/news_review_detail/<int:news_id>')
def news_review_detail(news_id):
    # 通过id查询新闻
    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)

    if not news:
        return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})

    # 返回数据
    data = {
        "news": news.to_dict()
    }
    return render_template('admin/news_review_detail.html', data=data)



@admin_blu.route('/news_review_action', methods=["POST"])
def news_review_action():
    # 接受参数
    news_id = request.json.get("news_id")
    action = request.json.get("action")

    # 参数校验
    if not all([news_id, action]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")

    if action not in ("accept", "reject"):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")

    # 查询到指定的新闻数据
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg="数据查询失败")

    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到数据")

    if action == "accept":
        # 代表接受
        news.status = 0
    else:
        # 代表拒绝
        reason = request.json.get("reason")
        if not reason:
            return jsonify(errno=RET.PARAMERR, errmsg="请输入拒绝原因")
        news.status = -1
        news.reason = reason

    return jsonify(errno=RET.OK, errmsg="OK")

@admin_blu.route('/news_edit')
def news_edit():
    """新闻编辑"""
    page = request.args.get("p", 1)
    keywords = request.args.get("keywords", None)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1

    filters = [News.status == 0]
    # 如果关键字存在，那么就添加关键字搜索
    if keywords:
        filters.append(News.title.contains(keywords))
    try:
        paginate = News.query.filter(*filters) \
            .order_by(News.create_time.desc()) \
            .paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)

        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_basic_dict())

    context = {"total_page": total_page, "current_page": current_page, "news_list": news_dict_list}

    return make_response(render_template('admin/news_edit.html', data=context),200)

@admin_blu.route('/news_edit_detail', methods=["GET", "POST"])
def news_edit_detail():
    if request.method == "GET":
        # 查询点击的新闻的相关数据并传入到模板中
        news_id = request.args.get("news_id")

        if not news_id:
            abort(404)

        try:
            news_id = int(news_id)
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_edit_detail.html', errmsg="参数错误")

        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_edit_detail.html', errmsg="查询数据错误")

        if not news:
            return render_template('admin/news_edit_detail.html', errmsg="未查询到数据")

        # 查询分类数据
        try:
            categories = Category.query.all()
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_edit_detail.html', errmsg="查询数据错误")

        category_dict_list = []
        for category in categories:
            # 取到分类的字典
            cate_dict = category.to_dict()
            # 判断当前遍历到的分类是否是当前新闻的分类，如果是，则添加is_selected为true
            if category.id == news.category_id:
                cate_dict["is_selected"] = True
            category_dict_list.append(cate_dict)

        # 移除最新的分类
        category_dict_list.pop(0)

        data = {
            "news": news.to_dict(),
            "categories": category_dict_list
        }

        return make_response(render_template('admin/news_edit_detail.html', data=data),200)

    # 获取Post数据
    news_id = request.form.get("news_id")
    title = request.form.get("title")
    digest = request.form.get("digest")
    content = request.form.get("content")
    index_image = request.files.get("index_image")
    category_id = request.form.get("category_id")
    # 判断数据是否有值
    if not all([title, digest, content, category_id]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

    # 查询指定id的
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg="数据查询失败")

    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到新闻数据")

    # 尝试读取图片
    if index_image:
        try:
            index_image = index_image.read()
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

        # 将标题图片上传到七牛
        try:
            picid = str(uuid4()).replace("-","")
            filename = index_image.filename
            picname = picid + "." + filename.split(".")[-1]
            picpath = "/static/media/news/"+ picname
            basepath = os.path.join(constants.MEDIAFLODER,"news",picname)
            index_image.save(basepath)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.THIRDERR, errmsg="上传图片错误")
        relpic = news.index_image_url
        news.index_image_url = picpath
        try:
            db.session.commit()
            if not relpic:
                if relpic.startswith("/static"):
                    relfilename = os.path.basename(relpic)
                    os.remove(os.path.join(constants.MEDIAFLODER, "news", relfilename))
        except Exception as e:
            logging.error("出现异常,异常原因%s"%e)
            os.remove(basepath)
            return jsonify(errno=RET.THIRDERR, errmsg="上传图片错误")
    # 设置相关数据
    news.title = title
    news.digest = digest
    news.content = content
    news.category_id = category_id

    return jsonify(errno=RET.OK, errmsg="OK")

@admin_blu.route('/news_type', methods=["GET", "POST"])
def news_type():
    if request.method == "GET":
        # 查询分类数据
        try:
            categories = Category.query.all()
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_type.html', errmsg="查询数据错误")

        category_dict_li = []
        for category in categories:
            # 取到分类的字典
            cate_dict = category.to_dict()
            category_dict_li.append(cate_dict)

        # 移除最新的分类
        category_dict_li.pop(0)

        data = {
            "categories": category_dict_li
        }

        return make_response(render_template('admin/news_type.html', data=data),200)
    else:
        # 新增或者添加分类
        # 取参数
        cname = request.json.get("name")
        # 如果传了cid，代表是编辑已存在的分类
        cid = request.json.get("id")

        if not cname:
            return jsonify(errno=RET.PARAMERR, errmsg="参数错误")

        if cid:
            # 有分类id 代表查询相关数据
            try:
                cid = int(cid)
                category = Category.query.get(cid)
            except Exception as e:
                current_app.logger.error(e)
                return jsonify(errno=RET.PARAMERR, errmsg="参数错误")

            if not category:
                return jsonify(errno=RET.NODATA, errmsg="未查询到分类数据")
            category.name = cname
        else:
            category = Category()
            category.name = cname
            db.session.add(category)

        return jsonify(errno=RET.OK, errmsg="OK")
